... ; F316; F316L; F321; LF2 etc. Pressure:150Lb-600Lb SpecificationsForged Check Valve 1.CE,ISO9001,API6D,CQC,PDO 2.Forged Check ... Valve Size 1/4"~2" 3.Class 800~1500LB A105,F5, ... ; F304L; F316; F316L; F321; LF2 etc.Forged Check valve: SpecificationsCast Steel Ball Valve 1.Design:BS5351,ANSI B16.34,API6D 2.Pressure ...